Tunnel-form.



C. D. MOARTHUR.

TUNNEL FORM. APPLIGATION FILED MAY 7, 1912.

Patented Dec. 30, 1913.

3 SHEET S-SHEET 1.

WITNESSES.- g e. MME i C. D.'M0ARTHUR. TUNNEL FORM. APPLIoATIoN FILED MAY 7, 1912.

s sIIIIETs-SHBB'T 2.

Patented Dec. 30, 1913.

f h o o K se WITNEssE-/f, 0 M/NVENTOR. Z i. u

. BY Af/mmw @W MME G. D. MOARTHUR. TUNNEL FORM.

^ APPLICATION FILED MAY 7, 1912.

1,1082f700. l Patented Dec. 30, 1913.

3 SHEETS-SHEET 3.

ATTORNEY.

UNITED STATES PATENT oEEioE.,

CHARLES D. MUABTHUB, F PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 BLAW STEEL CENTEBING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

TUNNEL-FORM.

Speoioation of Letters Patent.

Patented Dec. 30, 1913.

To all lwhom it may concern:

Be it known that I, CHARLES D. MOAR- TnUR, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Tunnel-Forms, of which the following is a s ecification.

The invention relates to tunnel forms, and has for its primary objects; the provision of a tunnel form having improved means for supporting the arch section employed, and for maintaining the side sect1ons in proper relation and at the same time permit of the collapsing thereof; and the provision of a form having improved means for handling the concrete or other material used in the construction of the tunnel lining. One embodiment of the invention is illustrated in the accompanying drawings, wherein- Fig. 1 1s an end elevation of the right hand end of the form as shown in Fig. 3, Fi". 2 is an end elevation of the other or hoist end of the framework of the form, and Fi 3 is a longitudinal section on the line I1 -III of Fig. 2.

The apparatus in its preferred form 1ncludes a pair of side sections built up of commercial sections forming ribs, and covered with a metal sheathing, an arch section which can be operated independently of the side sections, and a movable framework mounted upon a track and supporting the side and arch sections in such manner that tliev may be collapsed upon the framework and moved lon tudinally of the track, the said framewor carrying a plurality of tracks and a hoist so arranged that a dump car may be lifted bodily and moved to any desired point upon the framework.

Referring to the drawings, 1 1, are the ribs of the side sections of the form, which ribs carry a lagging 2, 2, preferably of sheet metal; and 3, 3, are sections of a truss, such truss when taken with the wood lagging 4 constituting the arch section which extends from the up er ed e of one side section to the upper eldge o the other side section. 'lhe lower ed res of the truss sections 3, 3 are secured re easably to the up er edges of the side sections, by means of t ie relatively short connecting members 5, 5, which members 5, 5, are connected at their upper ends to the ribs 6, 6, constituting a part of the truss sections, and at their lower ends the upper ends of the ribs 1, 1, the connections at one or both ends of such short connecting members 5 being detachable. When these members 5, 5, are detached and the strips of lagging 4 o posite thereto removed the arch section can e moved downward and the side sections can be moved inward.

The arch section and the side sections are supported upon tho movable framework as shown in Fig. 1, and consisting of the inclined channels 7, 7, and the transverse channels 8 and 9. As indicated in Figs. 1 and 3, the lower ends of the channels 7 7, on each side are rovided with longitudinally extending ciannels 10, and these channels 10 form a framework carrying the wheels 11, suoli wheels being mounted u on a track 12. T he side sections are pivote to the tramework by means of the metal members 14, 14, and 15, secured respectively to the ribs 1, l, the members 14, 14 being provided with the laterally extendin slots shown in dotted lines through which t e bolts 13, 13, carried by the members 15, 15, extend. The framework and the side sections are moved toward and from the frame by means of the turnbuckles 16, 16, and 17, 17, and by means of the threaded rods 18, 18, adjacent the lower edges of the sido sections. These rods 18, 18 curry nuts 19, 19 swiveled to the framework and ada ted to receive a turning bar. By means o these bars 18 and the turnbuekles 16 and 17 the side sections are moved in and out und held rigidly in any desired positionf The truss sections 3, 3 are sup )orted upon lifting jacks 20, 20 carried by t e members 15, 15, and the truss sections are guided in their vertical movement, by means of pins or bolts 21, 21, which slidin ly engage slots 22, 22 in the plates 23, 23, w iich are rigidly secured to the framework. It will be seen that when the 'connections 5, 5 are detached the arch section is free to move vertically independently of the sido sections, and is guided in such movement by the pins 21, 2l, and that the side sections are free to swing inwardly,independently of the arch section.

In order to sup )ly the concrete or other material for the iiniruv of the tunnel, the tracks 24, 25, 26, and 27 for'dump cars are provided upon the transverse channels 9 and 8 of the framework, such tracks extendin f longitudinally of the framework througii the distance marked A in Fig. 3 of the drawing, the distance B on this ligure constilll tuting the hoist portion of the framework and carrying a transfer car to be later described. Material brought on the dump cars along the tracks 24, 25, 26, and 27 is discharged to a position behind the lagging in any desired manner, one means being by the employment of chutes 28 shown in dotted lines on Fig. 1, which chutes can be moved from place to place and discharge at their lower ends through openings inthe lagging formed by swinging back hinged portion 29 thereof, as indicated in dotted lines.- However, various means may be employed for getting the material for the lining from the cars to its position back of the lagging, and

such means does not constitute an essential' part of my invention.

The portion marked B of the framework as shown in Fig. 3 constitutes the hoist portion of the framework, and the tracks 24, 25, 26, and 27 do not extend across this portion of the framework. There are in this portion of the framework, however, two other tracks 30 and 31 which extend transversel of the framework andcarry the transfier cars 32 and 33. These transfer cars 32 and 33 in turn carry the tracks 34 and 35, which tracks 34 and 35 are adapted to aline with the tracks 24 and 25, and 26 and 27, when the transfer cars are moved laterally to their proper positions. The function and utility of this apparatus will be apparent from-a consideration .of the method o fv handling the dump car containing the material. This dump car 36, comprises in the form' illustrated a bucket 37 pivoted at 38 upon the framework of the car and hav- 'ing a bail 39. This'car is mounted upon a' 'I track 40,which extends longitudinally of the framework substantially at the center thereof. This car is brought to the osition as indicated in Figs. 2 and 3 and li ted bodily by means ofthe cable 41 passing over the pulleys 42 and 43 (Fig. 3), the transfer cars 32 and 33 being in position to one side of the center' line of the framework, as indi'- cated in Fig. A2, lin order to permit of the elevation of the cars past such transfer cars.

If it is desired to use the car upon the lower 'traclts'26 or 27, the car is hoisted to a positionzjust above the channels 8, after which the car moved laterally to a position beneath the dump car, and the dump car is A lowered 4until its wheels rest upon the tracks 35'. The transfer car 33 can then be moved laterally until -its tracks 35 aline either with rso the tracks 26 or' 27, at which time the dump car can be shoved from the track 35 to the tracks 26 or 27, and moved longitudinally until itreaches the desired point of discharge. It will be understood that the portion marked A of the formas shown on Fig. 3 in practice relatively `much longer than the '-portion marked B, and that when it is desired-to concrete back of the lagging opposite the portion marked B the dump car remains upon the tracks 34 and 35, the transfer car being moved laterally upon the tracks 30 and 31 until the dump car is in position to discharge behind the lagging. It will be understood that any form of dumpl car may be used, and this term is used 1n its broad sense to indicate any car from. which a discharge may occur.

In operating the apparatus the framework carrying the yside and arch sections is brought to the position 'of use along `the track 12, the side and arch sections being at such time in their innermost positions. At this time the connecting members 5, 5 are detachedy and the jacks 2O, 20` are in lowered position. When the framework reaches a position for use the turnbuckles 16 and 17 and the rods 18 are operated to expand the side sections to .their proper positions, and the lifting jacks 2O are operated to raise the truss sections 3, 3 to their position of use, after which the connecting members 5, 5 are secured to the ribs of the side and truss sections, and the operation of supplying the concrete behind the lagging 2 is begun. During the first part of the filling in operation the tracks 26 and 27 are utilized, the con` crete being brought to position beneath the hoist, along the track 40 after which it is raisedto position above the transfer car33. After the transfer car has been moved in position beneath the dump car, such dump 'car is lowered until its wheels engage the track 35. The transfer car is then moved laterally to the edge of the framework, at which time a discharge may occur to a point behind the lagging, or the track 35 is broughtl into alinement with one of the tracks 26 or.,274 andthe dump car moved onto one of such tracks and carried to the position atlwhich it is desired to discharge behind the lagging. At a later stage in the operations the dum car is carried to the tracks 24 and 25, t e operation being substantially the same as heretofore described with respect to the lower tracks.

Having thus Adescribed my invention and illustrated its use, what I claim as new and desire to secure byLetters Patent, is the following:

iff

1. In combina-tion in a tunnel form, a

track, a. framework mounted on the track, a

side section at each side of the framework comprising upright ribs and lagging therej on, means whereby the side sections are moved toward and from the framework, a f rigid arch section comprising ribs and lag-.I ging mounted on the framework for vertisections, andreleasable joinin members be-,` tween vthe ends of the ribs o the arch and; side section.

vcal movement independent of the side sections and with the ends of its ribsspaced away from the ends of the ribs of the side` 2Q In combination in a tunnel form, a track, a framework mounted on the track, a side section at each side of the framework comprising upright ribs and lagging thereon, means whereby the side sections are moved toward and from the framework, a rigid arch section lying above the side sections, lifting means carried by the framework and engaging the arch section, and slip connections between the framework and arch section permitting a vertical movement of the arch section but preventing a lateral movement.

3. In combination in a 'tunnel form, a track, a framework mounted on the track, a side section at each side of the framework comprising upright ribs andlagging thereon,V means whereby the side sections are moved toward and fromthe framework, a rigid arch section comprising ribs and lagging mounted on the framework for vertical movement independent of the side sections and with the ends of its ribs spaced away fromv the ends of the ribs of the side sections, releasable joinin members between the ends of the I'ibs of't e arch and side Sections, means .formovingthe arch Asection vertically, and -slip connections between the framework and arch section permitting a vertical movement of the arch section but preventing lateral movement.

4. In combination in a tunnel form, a track, a' framework mounted on the track, side and arch sections carried by the 'framework, a car track beneath lthe framework exlongitudinally thereof, a dump cartending therefor, a cartrack on the framework parallel to such last car track but to one side thereof,l a transfer car mounted on the framework for movement the saidlast car track and having a car track for receiving the dump car from the car.

transversely oftrack beneath the framework and arranged to aline with vthe car track on the framework, andl a hoisting means on the framework for lifting such dump car and depositing it upon the car track on the transfer car.

5. In combination in a tunnel form, a track, a framework mounted on the track, side and arch sectionsicarried by thefra-mework, a car track beneath the framework extending longitudinally thereof,` a dump car therefor, a transfer car mounted on the framework for movement transversely thereof 'and having a track extending parallel with the said car track, and a hoisting means upon the framework for lifting the dump car from the car track beneath the frame y work and depositing it upon the track on the transfer car.

6. In combination in a' tunnel form, a

track, a framework mounted on the track,

side and arch sections carried by the framework, a car track beneath the framework extending longitudinally thereof, al dump car therefor, Aa transfer car mounted on the framework for movement transversely thereof and having a track extending parallel with the said car track, a plurality of car tracks extending longitudinally of the fra-mework for a portion of its length with which the track on the transfer car is adapted to aline, and a hoisting means on the. framework for liftin the dump car from the car track beneath te framework and depositing it upon the track on the transfer car. a

In testimony whereof I have Ihereunto signed my name in the presence of the two subscribed witnesses.

o. AD. MeARTHUR. Y Witnesses LETITIA MYERS, ARCHWORTH MARTIN. 

